[   48.063837] usb 1-1: new high-speed USB device number 4 using xhci_hcd
[   48.228555] usb 1-1: New USB device found, idVendor=0cf3, idProduct=9271, bcdDevice= 1.08
[   48.228556] usb 1-1: New USB device strings: Mfr=16, Product=32, SerialNumber=48
[   48.228557] usb 1-1: Product: UB93
[   48.228557] usb 1-1: Manufacturer: ATHEROS
[   48.228558] usb 1-1: SerialNumber: 12345
[   48.751533] usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.dev.0.fw requested
[   48.751634] usbcore: registered new interface driver ath9k_htc
[   49.051142] usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.dev.0.fw, size: 51008
[   49.304200] ath9k_htc 1-1:1.0: ath9k_htc: HTC initialized with 33 credits
[  137.740278] usb 1-1: USB disconnect, device number 4
[  138.055873] ath9k_htc: Failed to initialize the device
[  138.055934] usb 1-1: ath9k_htc: USB layer deinitialized
[  142.691840] usb 1-1: new high-speed USB device number 5 using xhci_hcd
[  142.856598] usb 1-1: New USB device found, idVendor=0cf3, idProduct=9271, bcdDevice= 1.08
[  142.856599] usb 1-1: New USB device strings: Mfr=16, Product=32, SerialNumber=48
[  142.856600] usb 1-1: Product: UB93
[  142.856600] usb 1-1: Manufacturer: ATHEROS
[  142.856601] usb 1-1: SerialNumber: 12345
[  142.860320] usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.dev.0.fw requested
[  143.157195] usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.dev.0.fw, size: 51008
[  143.409646] ath9k_htc 1-1:1.0: ath9k_htc: HTC initialized with 33 credits